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        <h3 id="下载文件："><a href="#下载文件：" class="headerlink" title="下载文件："></a>下载文件：</h3><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">getFile</span><span class="params">( $url, $filename = <span class="string">''</span>, $save_dir = <span class="string">''</span>, $type = <span class="number">0</span> )</span> </span>&#123;</span><br><span class="line">        <span class="keyword">if</span> ( trim( $url ) == <span class="string">''</span> ) &#123;</span><br><span class="line">            <span class="keyword">return</span> <span class="keyword">false</span>;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">if</span> ( trim( $save_dir ) == <span class="string">''</span> ) &#123;</span><br><span class="line">            $save_dir = <span class="string">'./'</span>;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="keyword">if</span> ( <span class="number">0</span> !== strrpos( $save_dir, <span class="string">'/'</span> ) ) &#123;</span><br><span class="line">            $save_dir .= <span class="string">'/'</span>;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="comment">//创建保存目录</span></span><br><span class="line">        <span class="keyword">if</span> ( !file_exists( $save_dir ) &amp;&amp; !mkdir( $save_dir, <span class="number">0777</span>, <span class="keyword">true</span> ) ) &#123;</span><br><span class="line">            <span class="keyword">return</span> <span class="keyword">false</span>;</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="comment">//获取远程文件所采用的方法</span></span><br><span class="line">        <span class="keyword">if</span> ( $type ) &#123;</span><br><span class="line">            $ch = curl_init();</span><br><span class="line">            $timeout = <span class="number">5</span>;</span><br><span class="line">            curl_setopt( $ch, CURLOPT_URL, $url );</span><br><span class="line">            curl_setopt( $ch, CURLOPT_RETURNTRANSFER, <span class="number">1</span> );</span><br><span class="line">            curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT, $timeout );</span><br><span class="line">            $content = curl_exec( $ch );</span><br><span class="line">            curl_close( $ch );</span><br><span class="line">        &#125; <span class="keyword">else</span> &#123;</span><br><span class="line">            ob_start();</span><br><span class="line">            readfile( $url );</span><br><span class="line">            $content = ob_get_contents();</span><br><span class="line">            ob_end_clean();</span><br><span class="line">        &#125;</span><br><span class="line">        <span class="comment">//echo $content;</span></span><br><span class="line">        $size = strlen( $content );</span><br><span class="line">        <span class="comment">//文件大小</span></span><br><span class="line">        $fp2 = @fopen( $save_dir . $filename, <span class="string">'a'</span> );</span><br><span class="line">        fwrite( $fp2, $content );</span><br><span class="line">        fclose( $fp2 );</span><br><span class="line">        <span class="keyword">unset</span>( $content, $url );</span><br><span class="line">        <span class="keyword">return</span> <span class="keyword">array</span>(</span><br><span class="line">            <span class="string">'file_name'</span> =&gt; $filename,</span><br><span class="line">            <span class="string">'save_path'</span> =&gt; $save_dir . $filename,</span><br><span class="line">            <span class="string">'file_size'</span> =&gt; $size</span><br><span class="line">        );</span><br><span class="line">    &#125;</span><br></pre></td></tr></table></figure>
<h3 id="解压文件："><a href="#解压文件：" class="headerlink" title="解压文件："></a>解压文件：</h3><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">tarFile</span><span class="params">( $file_name )</span> </span>&#123;</span><br><span class="line">        $buffer_size = <span class="number">4096</span>; <span class="comment">// read 4kb at a time</span></span><br><span class="line">        $out_file_name = str_replace( <span class="string">'.gz'</span>, <span class="string">''</span>, $file_name );</span><br><span class="line"></span><br><span class="line">        $file = gzopen( $file_name, <span class="string">'rb'</span> );</span><br><span class="line">        $out_file = fopen( $out_file_name, <span class="string">'wb'</span> );</span><br><span class="line"></span><br><span class="line">        <span class="keyword">while</span> ( !gzeof( $file ) ) &#123;</span><br><span class="line">            fwrite( $out_file, gzread( $file, $buffer_size ) );</span><br><span class="line">        &#125;</span><br><span class="line">        fclose( $out_file );</span><br><span class="line">        gzclose( $file );</span><br><span class="line">    &#125;</span><br></pre></td></tr></table></figure>
<h3 id="读取文件："><a href="#读取文件：" class="headerlink" title="读取文件："></a>读取文件：</h3><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">readFile</span><span class="params">( $file_name )</span> </span>&#123;</span><br><span class="line">        $hander = fopen( $file_name, <span class="string">'r'</span> ) <span class="keyword">or</span> <span class="keyword">die</span>( <span class="string">"Unable to open file!"</span> );</span><br><span class="line">        $str = fread( $hander, filesize( $file_name ) );</span><br><span class="line">        fclose( $hander );</span><br><span class="line">        <span class="keyword">return</span> $str;</span><br><span class="line">    &#125;</span><br></pre></td></tr></table></figure>

      
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